Login Ubuntu with no password for children like in windows

If you wish to use Ubuntu 12.04 and let a user open an session with a simple button click  (without being prompted for a password). Just type the following command in a terminal window :

sudo passwd -d myuser (where myuser is the user you want to grant this right) 

The command clear the password in /etc/shadow file for the specified user. You can then open a gnome session without any password.
Simple isn't it ?

Activer HTTPS de httpd sur ubuntu

Pour activer https sur Ubuntu

a2ensite default-ssl

Update Grub in Ubuntu

In order to start have your windows first in your Ubuntu 11.10, just change the order of the files in /etc/grub.d by changing the number starting each entry.

By default, the directory contains the files : 00_header, 01_linux, 02_linux_xen, 03_os_probe etc.
If you change the file names so that numbers looks like 00_header, 01_os_probe, 02_linux, 03_linux_xen

And then run grub-update (to update /boot/grub/grub.cfg) in command line. Windows will launch first at startup.

Aptitude sur Ubuntu

Installation a travers un proxy

vi /etc/apt/apt.conf.d/05aptitude

Ajouter la ligne :

Acquire::http::Proxy "http://myusername:mypasswd@myproxy:3128";

Rechercher un package à partir de son nom

root@ubuntu:/home/clement# apt-cache search jetty
libjetty-extra - Java servlet engine and webserver -- extra libraries
libjetty-extra-java - Java servlet engine and webserver -- extra libraries
libjetty-java - Java servlet engine and webserver -- core libraries
libjetty-java-doc - Javadoc for the Jetty API
jetty - Java servlet engine and webserver
liblogback-java - flexible logging library for Java
liblogback-java-doc - flexible logging library for Java - documentation
liboauth-signpost-java - simple OAuth message signing for Java
libspring-security-2.0-java-doc - documentation for Spring Security 2.0
libspring-security-acl-2.0-java - modular Java/J2EE application security framework - ACL
libspring-security-core-2.0-java - modular Java/J2EE application security framework - Core
libspring-security-ntlm-2.0-java - modular Java/J2EE application security framework - NTLM
libspring-security-portlet-2.0-java - modular Java/J2EE application security framework - Portlet
libspring-security-taglibs-2.0-java - modular Java/J2EE application security framework - Taglibs
solr-common - enterprise search server based on Lucene - common files
solr-jetty - enterprise search server based on Lucene - Jetty integration

Dump et load avec MySQL

How to make a dump

mysqldump -umyuser -pmypasswd mydb > dumpinteg_20110228.sql


How to load a dump

mysql -umyuser -pmypasswd mydb --default-character-set=utf8 < dumpinteg_20110228.sql

Installer un serveur subversion sur apache sur Ubuntu

Nous allons installer simplement un serveur svn


1. Installer les packages:
apt-get install subversion libapache2-svn

ou

yum install mod_dav_svn

(yum search dav)
2. Créer le répository

mkdir /var/svn
svnadmin create /var/svn/
chown -R www-data:www-data /var/svn/
chmod -R g+ws /var/svn/

3. Créer le fichier d'authentification

htpasswd -c -m /etc/apache2/dav_svn.passwd

4. Configurer apache
<Location /svn >
DAV svn
SVNPath /var/svn
AuthType Basic
AuthName "Subversion Repository"
AuthUserFile /etc/apache2/dav_svn.passwd
Require valid-user
</Location /svn >
5.Redémarrer Apache
/etc/init.d/apache2 restart


deploiement d'un fichier

Pour déployer un fichier sur archiva :

mvn deploy:deploy-file -Dfile=gwt-servlet.jar -DgroupId=com.google.gwt -DartifactId= -Dversion=1.3.0 -Dpackaging=jar -DrepositoryId=archiva.internal -Durl=http://archiva/repository/internal -DgeneratePom=true

Attention a bien fournir le proxy correct (https) et a fournir le user Id

 <proxies>
     <proxy>
      <id>optional</id>
      <active>true</active>
      <protocol>http https</protocol>
      <host>proxy.mdp</host>
      <port>3128</port>
      <nonProxyHosts>vmjirarh01|archiva</nonProxyHosts>
    </proxy>
  </proxies>


 <server>
      <id>archiva.internal</id>
      <username>upload</username>
      <password>ftj0bs-09</password>
    </server>
    <server>
      <id>archiva.snapshots</id>
      <username>upload</username>
      <password>ftj0bs-09</password>
    </server>